Revert 13105: "Enable stub generation using Hydrogen/Lithium."

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
deleted file mode 100644
index da9ec6a141138688a1d08193910359f72c34b98e..0000000000000000000000000000000000000000
--- a/src/code-stubs-hydrogen.cc
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "v8.h"
-
-#include "code-stubs.h"
-#include "hydrogen.h"
-#include "lithium.h"
-
-namespace v8 {
-namespace internal {
-
-
-Handle<Code> HydrogenCodeStub::CodeFromGraph(HGraph* graph) {
-  graph->OrderBlocks();
-  graph->AssignDominators();
-  graph->CollectPhis();
-  graph->InsertRepresentationChanges();
-  graph->EliminateRedundantBoundsChecks();
-  LChunk* chunk = LChunk::NewChunk(graph);
-  ASSERT(chunk != NULL);
-  Handle<Code> stub = chunk->Codegen(Code::COMPILED_STUB);
-  return stub;
-}
-
-
-class CodeStubGraphBuilderBase : public HGraphBuilder {
- public:
-  CodeStubGraphBuilderBase(Isolate* isolate, HydrogenCodeStub* stub)
-      : HGraphBuilder(&info_), info_(stub, isolate) {}
-  virtual bool BuildGraph();
-
- protected:
-  virtual void BuildCodeStub() = 0;
-  HParameter* GetParameter(int parameter) { return parameters_[parameter]; }
-  HydrogenCodeStub* stub() { return info_.code_stub(); }
-
- private:
-  SmartArrayPointer<HParameter*> parameters_;
-  CompilationInfoWithZone info_;
-};
-
-
-bool CodeStubGraphBuilderBase::BuildGraph() {
-  if (FLAG_trace_hydrogen) {
-    PrintF("-----------------------------------------------------------\n");
-    PrintF("Compiling stub using hydrogen\n");
-    HTracer::Instance()->TraceCompilation(&info_);
-  }
-  HBasicBlock* next_block = graph()->CreateBasicBlock();
-  next_block->SetInitialEnvironment(graph()->start_environment());
-  HGoto* jump = new(zone()) HGoto(next_block);
-  graph()->entry_block()->Finish(jump);
-  set_current_block(next_block);
-
-  int major_key = stub()->MajorKey();
-  CodeStubInterfaceDescriptor** descriptors =
-      info_.isolate()->code_stub_interface_descriptors();
-  if (descriptors[major_key] == NULL) {
-    descriptors[major_key] = stub()->GetInterfaceDescriptor(info_.isolate());
-  }
-
-  CodeStubInterfaceDescriptor* descriptor = descriptors[major_key];
-  parameters_.Reset(new HParameter*[descriptor->number_of_register_params]);
-
-  HGraph* graph = this->graph();
-  Zone* zone = this->zone();
-  for (int i = 0; i < descriptor->number_of_register_params; ++i) {
-    HParameter* param = new(zone) HParameter(i);
-    AddInstruction(param);
-    graph->start_environment()->Push(param);
-    parameters_[i] = param;
-  }
-  AddSimulate(BailoutId::StubEntry());
-
-  BuildCodeStub();
-
-  return true;
-}
-
-template <class Stub>
-class CodeStubGraphBuilder: public CodeStubGraphBuilderBase {
- public:
-  explicit CodeStubGraphBuilder(Stub* stub)
-      : CodeStubGraphBuilderBase(Isolate::Current(), stub) {}
-
- protected:
-  virtual void BuildCodeStub();
-  Stub* casted_stub() { return static_cast<Stub*>(stub()); }
-};
-
-
-template <>
-void CodeStubGraphBuilder<KeyedLoadFastElementStub>::BuildCodeStub() {
-  Zone* zone = this->zone();
-
-  HInstruction* load = BuildUncheckedMonomorphicElementAccess(
-      GetParameter(0), GetParameter(1), NULL, NULL,
-      casted_stub()->is_js_array(), casted_stub()->elements_kind(), false);
-  AddInstruction(load);
-
-  HReturn* ret = new(zone) HReturn(load);
-  current_block()->Finish(ret);
-}
-
-
-Handle<Code> KeyedLoadFastElementStub::GenerateCode() {
-  CodeStubGraphBuilder<KeyedLoadFastElementStub> builder(this);
-  return CodeFromGraph(builder.CreateGraph());
-}
-
-
-} }  // namespace v8::internal